Infrared spectroscopy

Infrared Spectroscopy:
Infrared Spectroscopy is the analysis of infrared light interacting with a molecule. This can be analyzed in three ways by measuring absorption, emission and reflection. The main use of this technique is in organic and inorganic chemistry. It is used by chemists to determine functional groups in molecules. IR Spectroscopy measures the vibrations of atoms, and based on this it is possible to determine the functional groups. Generally, stronger bonds and light atoms will vibrate at a high stretching frequency (wavenumber).
The components of an IR machine are the IR source, beam splitter, monochromator, a transducer, an analog to digital converter and a digital machine to quantify the readout.1 The IR light exits the source and becomes split into to beams, one to be directed to the sample the other to a reference. The intensity of the beam is measured by the intensity emitted divided by the intensity observed, also known as the Transmittance. All frequencies are measured in wavenumber, cm-1. To make a sample with a liquid, the liquid is placed between two pure salt sheets of NaCl and for a solid it is pressure pressed with KBr to incorporate both into one sheet. The reason for using salt to suspend the molecule is because the salt structures form a lattice that is strongly ionically bonded and will not absorb IR light because it lacks the vibrational capability. The Background scan or reference tends to be air.
Below 1500 cm-1 the spectra have very high sensitivity and this region is known as the fingerprint region where C-C bond stretching and bending motions overlap, making it difficult to predict functional groups. For more specific bond stretch frequencies see CharacteristicAbsorption Frequencies in IR Spectra. Omics group conference OMICS group International is a pioneer and leading scientific event organizer, publication around four hundred Open access journals and conducting over three hundred Scientific conferences everywhere the world annually with the support of over a thousand scientific associations, 30,000 editorial board members, and 3.5 million followers to its credit. Raising its curtains within the year 2007, OMICS group International aims to circularize information with the assistance of its Open access Journals and marches on to instigate OMICS group International Conferences within the year 2010, to produce a meaningful platform for the globe celebrated scientists, researchers, students, academicians, establishments, entrepreneurs and industries through its scientific events annually throughout the world. OMICS Scientific conferences 2014-2015 can enhance the abundance of information of all the participants in several fields and can be a mélange of eminent speakers, business professionals, social activist, students etc. Discussing on varied imperative topics can add AN insight to cogitate and confer over crux of today’s scientific and technological perk up. Our conferences square measure scientific rostrums to unveil the novel developments and to cogitate, and blend concepts and realities through sensible experiences. The OMICS group of scientific conferences 2014-2015 square measure paragoned and an unmissable chance to engross the knowledge and communication technologies bobbing within the fashionable age. OMICS group Engineering Conventions 2014-2015 facilitates higher understanding regarding the technological developments and scientific advancements across the globe by at the same time equating with the speed of science, technology and business domains.